Bhagavad Gita, Chapter 9, Verse 23

येऽप्यन्यदेवता भक्ता यजन्ते श्रद्धयान्विताः । तेऽपि मामेव कौन्तेय यजन्त्यविधिपूर्वकम्

ye'pyanyadevatā bhaktā yajante śraddhayānvitāḥ | te'pi māmeva kaunteya yajantyavidhipūrvakam

Translation

Even those who, devoted to other Gods, worship Them with faith, worship Myself, O son of Kuntī, in ignorance.

— Alladi Mahadeva Sastri

Word meanings

ye
who
api
also
anyadevatābhaktāḥ
(of) other, of gods, devotee
yajante
worship
śraddhayānvitāḥ
with faith, endowed
te
they
api
also
mām
me
eva
even
kaunteya
O Kaunteya
yajanti
worship
avidhipūrvakam
non-rule, preceding (guide), as, may be, so

Śaṅkarācārya's commentary

With faith: believing in the efficacy of the worship of those Gods. They worship in ignorance because they do not know that the Lord is the One Self of all the Gods.